Buying a building plot in Spain: what to check first

Buying a building plot in Spain: land classes, what the plan lets you build, services, slope, coast, forest and flood limits, and the cost before work starts.

Last checked 17 October 2026

What you will learn

Which land you can build on, and which only in theory
How to get the planning rules for a plot in writing
The costs that come before the first brick

When you are buying a building plot in Spain, you are buying a permission as much as a piece of land. The town's urban plan fixes what may be built, and the services, the slope, the coast, the forest and the risk of flooding can each reduce it. On the Costa Blanca North these checks come before the price is agreed, and most of them can be done in a few weeks with the town hall and an architect.

Urban, urbanisable or rustic land

The Valencian planning law, the TRLOTUP, divides land into three classes. Suelo urbano is urban land. Suelo urbanizable is land set aside for future development: the law calls it merely suitable for development, which can only happen once a development programme has been approved and carried out. Suelo no urbanizable is rustic land. For a buyer who wants to build a house soon, the straightforward case is an urban plot that already counts as a solar.

A solar is a legally formed plot with the services the law requires: a paved road open to the public, drinking water and electricity with enough capacity for the planned house, wastewater to a mains sewer connected to a treatment plant, and a pavement and street lighting on at least one of the roads it faces. A septic tank does not count as the sewage service, although the town can accept an individual system where a mains connection brings no benefit or would cost too much.

Rustic land is a different market. The law allows a single family house there only as an exception: the town plan must provide for it, the plot must be at least one hectare (10,000 m²) per house, the building may cover no more than 2% of it, the house must stay out of natural runoff paths, and the owner pays for the water supply and the treatment of wastewater. There is a second risk. On urban land a town hall has fifteen years from the end of unlicensed works to order them undone; under the current law that limit does not apply on rustic land, and even where the time has passed, it does not make a building legal.

What the plan lets you build

Each town's general plan sets the numbers for each zone: buildability (edificabilidad, the floor area you may build, usually a ratio of the plot area), occupation (ocupación, the share of the plot the building may cover), the maximum height and number of floors, and the setbacks (retranqueos) from the road and the boundaries. When a licence is applied for, the town hall checks the project against exactly these parameters, so they are worth having in writing before you buy.

There are two ways to get them. Every town hall must tell you in writing, within one month, the zoning, classification and programming of a piece of land. For a buildable plot it can also issue a cédula de garantía urbanística, again within one month. The cédula states the zoning and classification and is valid for up to one year. If the plan changes during that year, the town must compensate the owner who obtained it for the loss, provided no planning duties (land transfers or development charges) are outstanding. Cédulas are not issued while licences are suspended in the area, which is useful information in itself.

Match the plot to the Catastro as well. The cadastral record shows the surface and boundaries the tax authorities hold, and any difference from the land registry or from the fences on the ground is best resolved before you sign. An architect or surveyor measures the plot, and your lawyer makes sure the deed describes what you are actually buying.

Services, slope and soil

On a solar the services reach the plot by definition, but capacity and cost still matter. Ask the water operator and the electricity distributor in writing what a new connection needs and what it costs. Under the same Valencian law, utility companies may not connect a building that lacks the planning permits for its use, so supplies cannot be arranged ahead of the paperwork.

Much of this coast is steep. A sloping plot can give the best view and the most expensive foundations: retaining walls, earthworks and access ramps add up, and earthworks need a licence of their own. The building code's foundations document, CTE DB SE-C, places the geotechnical study at the start of the design, before the structure is sized. It looks at the ground, groundwater, any instability or landslides, and the foundations of the neighbouring houses. If the plot is steep or the ground uncertain, commission the study before you commit.

Coast, forest and flood: the outside limits

Near the sea, the Ley de Costas creates a protection zone of 100 metres inland from the shore in which new homes are not allowed. On land that was already urban when the law came into force in 1988, the zone is generally 20 metres. The Valencian coastal law of 2025 adds its own authorisation, and parts of it remain suspended while the Constitutional Court decides a challenge, so a plot near the sea needs a plot by plot check. Our guide to buying near the sea explains the rules.

Many plots border pine woodland. Valencian forestry law treats a band of up to 500 metres around forest land as a zone of forest influence. A house in or next to forest land must keep a defence area of at least 30 metres around the building, widening to 50 metres where the slope exceeds 30%, with the vegetation thinned to the standards in the planning law. That area can fall on your own plot and limits where the house, the pool and the garden go.

Low ground, and plots beside a barranco (a dry ravine that can carry a torrent after heavy rain), need the regional and national flood maps checked. Our guide to flood and wildfire risk shows how to read them.

What buying a building plot in Spain really costs

The price is only the first line. From a private seller, the purchase pays transfer tax (ITP), which in the Comunitat Valenciana is 9%, or 11% where the value is above €1 million, under the Valencian tax law, Ley 13/1997. When the seller is a business, building land is normally sold with VAT at 21% instead, plus stamp duty. Ask an independent tax adviser and your notary to confirm the figure for your own purchase.

Design and permits. The architect's and engineers' fees, the topographic survey and the geotechnical study come first. The licence then carries a municipal fee and the construction tax ICIO, which each town sets at up to 4% of the material cost of the works.

Ground and services. Earthworks, retaining walls, the access and the connection charges for water, electricity and sewage. These vary most with the slope and with the distance to the existing networks.

Insurance. A new house needs the ten year insurance against structural damage set by the building law, Ley 38/1999. An individual who builds one house for their own use is exempt at the start, but if they sell within the ten years they must take it out for the remaining years, unless the buyer expressly waives it.

Time. By law a town hall has two months to decide a licence for a new building. In practice, on this coast, it often takes much longer, and the wait has its own cost if you are renting in the meantime. Our guide from plot to keys sets out the phases of a build and how long each one takes.

You will notice there is no building cost per square metre in this guide. It depends on the design, the ground and the finishes, and an honest figure comes from an architect's estimate for your plot, not from an average.

What buying a building plot in Spain really comes down to is evidence before commitment. Before you agree a price, ask the town hall for the written planning information or a cédula, have an architect check what fits and what the slope will cost, and confirm the coastal, forest and flood position. Confirm the planning position with an architect or the town hall, and the legal position with an independent lawyer. Then the price can be negotiated on facts. These are the building plots on the market now, and we check each one with you before you decide.

Homes for this guide

Across the coast

Written by Nicolas Strebel.